Mean arterial pressure is
A. cardiac output times peripheral resistance.
B. end-diastolic volume minus end-systolic volume.
C. maximum cardiac output minus cardiac output when at rest.
D. heart rate times stroke volume.
E. stroke volume times peripheral resistance.
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Question 2) Afterload is
A. the name given to an increase in end-diastolic volume.
B. the arterial pressure that the ventricles must overcome to eject blood.
C. the amount cardiac output must increase during exercise.
D. another name for venous return.
E. the extent to which ventricular walls are stretched.
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Question 3) Regurgitation of blood flow through the aortic semilunar valve would give rise to
A. the first heart sound.
B. the second heart sound.
C. a heart murmur.
D. an extra heart beat.
E. end-systolic volume.
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Question 4) The product of the stroke volume times the heart rate is known as the
A. end-diastolic volume.
B. end-systolic volume.
C. cardiac output.
D. cardiac reserve.
E. venous return.
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Question 5) The volume of blood pumped during each cardiac cycle is the
A. stroke volume.
B. cardiac output.
C. cardiac reserve.
D. end-systolic volume.
E. end-diastolic volume.
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Question 6) An incompetent mitral valve may cause blood to back up into the
A. aorta.
B. left atrium.
C. left ventricle.
D. coronary circulation.
E. right atrium.
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Question 7) The first and second heart sounds are most directly related to
A. pulse pressure in the aorta.
B. the contraction of the atria.
C. vibrations that occur when the valves close.
D. contraction of the papillary muscles.
E. the flow of the blood.
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Question 8) Concerning heart sounds, which of the following is correct?
A. The first heart sound occurs at the beginning of ventricular systole.
B. The second heart sound is heard when the AV valves are closing.
C. The first heart sound is the sound of the semilunar valves closing.
D. The second heart sound occurs when blood flows into the superior vena cava.
E. The first heart sound occurs at the beginning of ventricular diastole.
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Question 9) What occurs during the time between the first heart sound and the second heart sound?
A. ventricular systole
B. ventricular diastole
C. ventricular filling
D. atrial systole
E. the P wave of the ECG
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Question 10) When ventricular pressure exceeds atrial pressure, the
A. ejection occurs.
B. atria pump blood into the ventricles.
C. ventricle is in diastole.
D. blood is pumped into the atrium.
E. AV valves close.
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